CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Income Statement [Abstract]
Net sales	$ 1,385,737	$ 1,418,241	$ 2,689,852	$ 2,750,677
Cost of sales	1,069,994	1,099,281	2,075,061	2,114,539
Gross profit	315,743	318,960	614,791	636,138
Operating expenses	243,984	239,157	486,199	490,919
Operating income	71,759	79,803	128,592	145,219
Other income (expense):
Other income, net	1,160	1,622	2,672	3,986
Interest expense	(11,468)	(10,097)	(22,671)	(20,259)
Income before taxes	61,451	71,328	108,593	128,946
Income tax expense	21,207	25,572	37,502	44,284
Net income	$ 40,244	$ 45,756	$ 71,091	$ 84,662
Earnings per share:
Basic (in USD per share)	$ 0.43	$ 0.48	$ 0.76	$ 0.89
Diluted (in USD per share)	$ 0.43	$ 0.48	$ 0.76	$ 0.88
Weighted average shares:
Basic (in shares)	92,722	95,290	93,037	95,510
Diluted (in shares)	93,351	95,904	93,683	96,138
Dividends declared per common share (in USD per share)	$ 0.26000	$ 0.24	$ 0.52	$ 0.48
Comprehensive income
Net income	$ 40,244	$ 45,756	$ 71,091	$ 84,662
Foreign currency translation gain (loss)	(3,965)	(14,001)	8,119	(34,258)
Cash flow hedges, net of tax	438	437	875	870
Comprehensive income	$ 36,717	$ 32,192	$ 80,085	$ 51,274